Bought a mint '84 Aspencade with a matching California Friendship I rig this summer. Got it from the 2nd owner, who had bought it from an estate sale three years ago. He also had a Victory and a VTX1800. He bought the hack rig for no other reason than to give his dogs a ride.
Don't have a dog, but what I've found is that little kids just love sidecar rides, so much so, some even ask for ride for a birthday present!.